1 #ifndef _ASM_X86_REQUIRED_FEATURES_H
2 #define _ASM_X86_REQUIRED_FEATURES_H
3
4 /* Define minimum CPUID feature set for kernel These bits are checked
5 really early to actually display a visible error message before the
6 kernel dies. Make sure to assign features to the proper mask!
7
8 Some requirements that are not in CPUID yet are also in the
9 CONFIG_X86_MINIMUM_CPU_FAMILY which is checked too.
10
11 The real information is in arch/x86/Kconfig.cpu, this just converts
12 the CONFIGs into a bitmask */
13
14 #ifndef CONFIG_MATH_EMULATION
15 # define NEED_FPU (1<<(X86_FEATURE_FPU & 31))
16 #else
17 # define NEED_FPU 0
18 #endif
19
20 #if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
21 # define NEED_PAE (1<<(X86_FEATURE_PAE & 31))
22 #else
23 # define NEED_PAE 0
24 #endif
25
26 #ifdef CONFIG_X86_CMPXCHG64
27 # define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31))
28 #else
29 # define NEED_CX8 0
30 #endif
31
32 #if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64)
33 # define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31))
34 #else
35 # define NEED_CMOV 0
36 #endif
37
38 #ifdef CONFIG_X86_USE_3DNOW
39 # define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31))
40 #else
41 # define NEED_3DNOW 0
42 #endif
43
44 #if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64)
45 # define NEED_NOPL (1<<(X86_FEATURE_NOPL & 31))
46 #else
47 # define NEED_NOPL 0
48 #endif
49
50 #ifdef CONFIG_X86_64
51 #ifdef CONFIG_PARAVIRT
52 /* Paravirtualized systems may not have PSE or PGE available */
53 #define NEED_PSE 0
54 #define NEED_PGE 0
55 #else
56 #define NEED_PSE (1<<(X86_FEATURE_PSE) & 31)
57 #define NEED_PGE (1<<(X86_FEATURE_PGE) & 31)
58 #endif
59 #define NEED_MSR (1<<(X86_FEATURE_MSR & 31))
60 #define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31))
61 #define NEED_XMM (1<<(X86_FEATURE_XMM & 31))
62 #define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31))
63 #define NEED_LM (1<<(X86_FEATURE_LM & 31))
64 #else
65 #define NEED_PSE 0
66 #define NEED_MSR 0
67 #define NEED_PGE 0
68 #define NEED_FXSR 0
69 #define NEED_XMM 0
70 #define NEED_XMM2 0
71 #define NEED_LM 0
72 #endif
73
74 #define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
75 NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
76 NEED_XMM|NEED_XMM2)
77 #define SSE_MASK (NEED_XMM|NEED_XMM2)
78
79 #define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW)
80
81 #define REQUIRED_MASK2 0
82 #define REQUIRED_MASK3 (NEED_NOPL)
83 #define REQUIRED_MASK4 0
84 #define REQUIRED_MASK5 0
85 #define REQUIRED_MASK6 0
86 #define REQUIRED_MASK7 0
87
88 #endif /* _ASM_X86_REQUIRED_FEATURES_H */
89
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